pyQt5中将16位数组temp[roi_y1:roi_y2, roi_x1:roi_x2]变成16位图片显示在label中
时间: 2024-11-25 22:16:03 浏览: 22
在PyQt5中,如果你有一个16位的NumPy数组`temp`,并且想要将其显示在一个 QLabel 中作为图像,你需要做以下几个步骤:
1. 首先,确保`temp`是一个正确的16位灰度图像数据。如果它是二维数组,每行代表像素,每列包含亮度值。
2. 导入必要的库,包括 `numpy`, `matplotlib.pyplot` 和 `pyqt5.QtGui` 来处理图像和 GUI:
```python
import numpy as np
from matplotlib import pyplot as plt
from PyQt5.QtWidgets import QApplication, QLabel
from PyQt5.QtGui import QImage, QPixmap
```
3. 将 NumPy 数组转换为 QImage 对象,这是 Qt 用于处理图像的标准格式:
```python
# 将16位数组转换为8位灰度图像(因为QImage只支持8位)
temp_8bit = temp.astype(np.uint8)
# 创建 QImage 对象,并设置尺寸
image = QImage(temp_8bit.data, temp.shape[1], temp.shape[0], QImage.Format_Grayscale8)
```
4. 现在你可以创建 QLabel 并设置图像:
```python
app = QApplication([]) # 初始化应用
label = QLabel() # 创建 QLabel 实例
label.setPixmap(QPixmap.fromImage(image)) # 设置 QLabel 的图像
# 如果需要,可以调整 QLabel 的大小和位置
label.resize(temp.shape[1], temp.shape[0])
label.move(0, 0) # 这里是假定窗口左上角 (0, 0)
# 显示窗口
label.show()
app.exec_()
```
运行这段代码后,你会看到一个 QLabel 显示了来自 `temp` 数组的16位灰度图像。
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